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    CONTENT BASED STREAM SPLITTING OF VIDEO DATA
    33.
    发明公开
    CONTENT BASED STREAM SPLITTING OF VIDEO DATA 审中-公开

    公开(公告)号：EP3516882A1

    公开(公告)日：2019-07-31

    申请号：EP17769175.5

    申请日：2017-09-18

    申请人： Dolby Laboratories Licensing Corporation

    发明人： ATLURU, Chaitanya ,  NINAN, Ajit

    IPC分类号： H04N21/4728

    摘要： Scenes in video images are identified based on image content of the video images. Regional cross sections of the video images are determined based on the scenes in the video images. Image portions ofthe video images in the regional cross sections are encoded into multiple video sub-streams at multiple different spatiotemporal resolutions. An overall video stream that includes the multiple video sub-streams is transmitted to a streaming client device.

    IMAGE PROCESSING FOR HDR IMAGES
    35.
    发明公开
    IMAGE PROCESSING FOR HDR IMAGES 审中-公开
    用于HDR图像的图像处理

    公开(公告)号：EP3168809A1

    公开(公告)日：2017-05-17

    申请号：EP16198561.9

    申请日：2013-07-31

    申请人： Dolby Laboratories Licensing Corporation

    发明人： SHAH, Ankur ,  NINAN, Ajit ,  JIA, Wenhui ,  TONG, Huiming ,  YANG, Qiaoli ,  TEN, Arkadi ,  WANG, Gaven

    IPC分类号： G06T5/00 ,  G06T5/50

    CPC分类号： H04N19/136 ,  G06K9/4652 ,  G06T5/009 ,  G06T5/50 ,  G06T7/90 ,  G06T2207/20008 ,  G06T2207/20024 ,  G06T2207/20208 ,  H04N19/117 ,  H04N19/119 ,  H04N19/124 ,  H04N19/182 ,  H04N19/184 ,  H04N19/186 ,  H04N19/33 ,  H04N19/44 ,  H04N19/46

    摘要： Image encoding is described. Log-luminances in an HDR input image are histogrammed to generate a tone-map, along with which a log global tone-mapped luminance image is computed. The log global tone-mapped luminance image is downscaled. The log-luminances and the log global tone-mapped luminance image generate a log ratio image. Multi-scale resolution filtering the log ratio image generates a log multi-scale ratio image. The log multi-scale ratio image and the log luminances generate a second log tone-mapped image, which is normalized to output a tone-mapped image based on the downscaled log global tone-mapped luminance image and the normalized image. The HDR input image and the output tone-mapped image generate a second ratio image, which is quantized.

    摘要翻译： 描述图像编码。 对HDR输入图​​像中的对数亮度进行直方图化以生成色调图，并计算对数全局色调映射亮度图像。 日志全局色调映射亮度图像被缩小。 对数照度和对数全局色调映射亮度图像生成对数比率图像。 多尺度分辨率过滤日志比率图像会生成日志多尺度比例图像。 日志多尺度比率图像和对数照度产生第二对数色调映射图像，该第二对数色调映射图像被归一化以基于缩减后的对数全局色调映射亮度图像和归一化图像来输出色调映射图像。 HDR输入图​​像和输出色调映射图像生成量化的第二比率图像。